Need help sculping wand! Using brushes seemed to be stretched horizontally
This is a common mistake on newer users.
you have to apply the  scale of the object.
to do so press "Ctrl A" and then apply scale

If you look at the side bar you can see
"Location"
"Rotation"
"Scale"
"Dimensions"

The difference between scale and dimensions is that dimensions is in real world values such as cm, m, inch, foot... While the scale is the stretching of the object.

If you press "S" in object mode you will scale using the scale values and distort the object. It can be useful sometimes but usually you should apply the scale.